منابع مشابه
Angular Power Spectra of the COBE DIRBE Maps
The angular power spectra of the infrared maps obtained by the DIRBE (Diffuse InfraRed Background Experiment) instrument on the COBE1 satellite have been obtained by two methods: the Hauser-Peebles method previously applied to the DMR maps, and by Fourier transforming portions of the all-sky maps projected onto a plane. The two methods give consistent results, and the power spectrum of the high...
متن کاملReconstruction Analysis of the Iras Point Source Catalog Redshift Survey
We present the results of reconstruction analysis of the galaxy distribution in a spherical region of radius 50 h~1 Mpc centered on the Local Group, as mapped by the IRAS Point Source Catalog Redshift Survey (PSCz). We reconstruct this galaxy distribution using 15 di†erent models for structure formation in the universe, each model consisting of a set of assumptions regarding the value of the co...
متن کاملDetermination of the Far-infrared Cosmic Background Using Cobe Dirbe and Wham Data
Determination of the cosmic infrared background (CIB) at far-infrared wavelengths using COBE DIRBE data is limited by the accuracy to which foreground interplanetary and Galactic dust emission can be modeled and subtracted. Most previous determinations of the far-infrared CIB were based on the detection of residual isotropic emission in skymaps fromwhich the emission from interplanetary dust an...
متن کاملA Tentative Detection of the Cosmic Infrared Background at 3.5 μm from COBE/DIRBE Observations
Foreground emission and scattered light from interplanetary dust (IPD) particles and emission from Galactic stellar sources are the greatest obstacles for determining the cosmic infrared background (CIB) from diffuse sky measurements in the ∼ 1 to 5 μm range. We describe a new method for deriving the CIB at near infrared wavelengths which reduces the uncertainties associated with the removal of...
متن کاملLimits on the cosmic infrared background from clustering in COBE / DIRBE maps
We discuss a new method of estimating the cosmic infrared background (CIB) from the spatial properties of infrared maps and give the limits on the CIB from applying it to the COBE/DIRBE maps. The strongest limits are obtained at midto far-IR where foregrounds are bright, but smooth. If the CIB comes from matter clustered like galaxies, the smoothness of the maps implies CIB levels less than ∼(1...
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ژورنال
عنوان ژورنال: The Astrophysical Journal Supplement Series
سال: 2004
ISSN: 0067-0049,1538-4365
DOI: 10.1086/423248